International Journal of Coal Geology
International Journal of Coal Geology > 2006 > 68 > 1-2 > 117-126
International Journal of Coal Geology > 2006 > 68 > 1-2 > 2-13
International Journal of Coal Geology > 2006 > 68 > 3-4 > 223-232
International Journal of Coal Geology > 2006 > 68 > 1-2 > 117-126
International Journal of Coal Geology > 2006 > 68 > 1-2 > 2-13
International Journal of Coal Geology > 2006 > 68 > 3-4 > 223-232